Friday, November 13, 2009

Cold Then Fun!

With the snow on the ground and clear skies the valley was able to get into the teens and the mountain the 20's overnight. Looking at the Northstar cam the snow guns are firing.  They should be able to make snow a good portion of the next few days with highs in the 30's on the mountains.  Lows tonight & tomorrow night will be in the teens & 20's, with stronger inversions forming by Sunday night with the warmer ridge moving in overhead.

The storm for tonight looks to mostly stay to our East as an inside slider, bringing us maybe a snow shower but mostly a reinforcing shot of cold air. The ridge builds in Sun.-Tues. ahead of the next series of storms. Models coming into better agreement on 3 areas of low pressure bringing snow starting Wed. As the ridge moves East and one reforms out around 160w in the Pacific, we could see storms Wed, Fri, & Sun. with not much break between them. Right now the Friday storm looks the biggest but it's early yet to get into details. This series of storms could lay down some decent amounts of snow. Stay tuned......

Looking longer range the PNA looks to go positive towards the end of the month which would support ridging over the West Coast. At the same time the NAO in the North Atlantic is forecast to go negative. This would support a trough in the East getting held in place and therefore holding the ridge over the West from moving East. We may have a week or so where we have to wait for the trough in the East to move so we can re-open the storm door. Hopefully this will change. BA

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